Original Bosch F016A57669 — adjuster sleeve for cylinder/reel height adjustment. This small plastic adjusting sleeve (replacement for the worn height‑adjuster on cylinder mowers) installs where the reel height is set and restores smooth, positive indexing of the height teeth.

Fits a range of cylinder mowers and related reel cartridges — for example: Bosch Classic Petrol 43S (type 3616C06A70), and many Allett/Atco/Qualcast/Suffolk Punch reel and cassette models (Allett 10‑blade cassettes 14", 17", 20"; Classic 12E/14L/17L; Kensington 12E/14E/14K/17K/20K; Liberty 30/35/43; Sandringham 14E; Atco Balmoral 14S, etc.).

 Supplied as the original Bosch replacement piece, this part is a direct-fit plastic adjuster sleeve designed to drop in for the factory component — an easy swap that restores correct reel clearance and indexing without modification. Keep one with your other power tool parts to quickly bring a mower back into service.

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